6420445343 has 8 divisors (see below), whose sum is σ = 7152751200. Its totient is φ = 5722200288.

The previous prime is 6420445337. The next prime is 6420445349. The reversal of 6420445343 is 3435440246.

It is an interprime number because it is at equal distance from previous prime (6420445337) and next prime (6420445349).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6420445343 - 2⁶ = 6420445279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420445349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8514803 + ... + 8515556.

It is an arithmetic number, because the mean of its divisors is an integer number (894093900).

Almost surely, 2^6420445343 is an apocalyptic number.

6420445343 is a deficient number, since it is larger than the sum of its proper divisors (732305857).

6420445343 is a wasteful number, since it uses less digits than its factorization.

6420445343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030401.

The product of its (nonzero) digits is 138240, while the sum is 35.

The square root of 6420445343 is about 80127.6815027117. The cubic root of 6420445343 is about 1858.6104917902.

Adding to 6420445343 its reverse (3435440246), we get a palindrome (9855885589).

The spelling of 6420445343 in words is "six billion, four hundred twenty million, four hundred forty-five thousand, three hundred forty-three".